Here's a site that I've visited when I was curious about specific womanly topics. I got the impression the site was written by women for women. It may not prepare her for losing her virginity, but it might help her to better understand and explore her sexual self.... the text can be very blunt and straight forward. I recommended leaving the site with her and letting her explore privately at her own pace. I'm not sure how you gave Pixies to her, but she may need the comfort of privacy to get started in exploration.

My Vagina